小波域图像水印技术与算法研究

数字水印技术是通过特定的算法将版权信息嵌入到多媒体数据中,且不影响原媒体的使用价值,通过专用的检测器可以提取这些嵌入的信息,从而实现版权保护、篡改检测等应用。分析了数字水印技术的概念、特点,在此基础上,研究了小波变换在数字水印中的应用和它的优点;实现了一种DWT域扩频水印技术,进行了相应程序的设计。实验结果表明,该算法鲁棒性好,对JPEG压缩、滤波、剪切、高斯噪声等攻击有较好的抵抗能力。

Research on the DWT Watermarking Technology and Algorithm

The digital watermark technology is embedding the copyright information into the multimedia data through the specific algorithm and not affecting the use value of the original media. The embedded information can be withdrawn through the special-purpose detector, which can realize the applications of copyright protection, interpolation examination and so on. This paper has analyzed the concept and characteristics of digital watermark technology, studied the wavelet transformation application in the digital w...